PDF malware analysis — malicious · 4755fd95171b2f41

MALICIOUS

PDF

46.4 KB Created: 2021-05-10 19:49:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04

MD5: 7350e92cb8e9883ed9e33e8035bef118 SHA-1: 10ecf67de4eb188ece231522409d6830ea3e3595 SHA-256: 4755fd95171b2f41d9a594df94c11935a51bfb316914fad5e20eba9681626aa9

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. It uses brand-impersonation credential phishing. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.8696

Heuristics 5

PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH

Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/406889139/free-spins-and-coins-com-game-hack.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
External URI info PDF_URI

PDF contains an external URL action
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://netcdn.xyz/app/406889139/free-spins-and-coins-com-game-hack PDF link annotation
- https://learning1.misbidayatulhidayah3medan.sch.id/__statics/gudangsoal/files/coin-master-cards_GM406889139.pdfIn PDF document text
- https://learning1.misbidayatulhidayah3medan.sch.id/__statics/gudangsoal/files/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
- https://learning1.misbidayatulhidayah3medan.sch.id/__statics/gudangsoal/files/coin-master-twitter-free-spins_GM406889139.pdfIn PDF document text
- https://learning1.misbidayatulhidayah3medan.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
- https://learning1.misbidayatulhidayah3medan.sch.id/__statics/gudangsoal/files/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
- https://learning1.misbidayatulhidayah3medan.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdfIn PDF document text
- https://learning1.misbidayatulhidayah3medan.sch.id/__statics/gudangsoal/files/minecraft-wurst_GM479516143.pdfIn PDF document text
- https://learning1.misbidayatulhidayah3medan.sch.id/__statics/gudangsoal/files/coin-master-village-cost_GM406889139.pdfIn PDF document text
- https://learning1.misbidayatulhidayah3medan.sch.id/__statics/gudangsoal/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://learning1.misbidayatulhidayah3medan.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
- https://learning1.misbidayatulhidayah3medan.sch.id/__statics/gudangsoal/files/robux-place-rewards_GM431946152.pdfIn PDF document text
- https://learning1.misbidayatulhidayah3medan.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://learning1.misbidayatulhidayah3medan.sch.id/__statics/gudangsoal/files/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
- https://learning1.misbidayatulhidayah3medan.sch.id/__statics/gudangsoal/files/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
- https://learning1.misbidayatulhidayah3medan.sch.id/__statics/gudangsoal/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
- https://learning1.misbidayatulhidayah3medan.sch.id/__statics/gudangsoal/files/roblox-avatar-tester_GM431946152.pdfIn PDF document text
- https://learning1.misbidayatulhidayah3medan.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
- https://learning1.misbidayatulhidayah3medan.sch.id/__statics/gudangsoal/files/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://learning1.misbidayatulhidayah3medan.sch.id/__statics/gudangsoal/files/ro-ghoul-script_GM431946152.pdfIn PDF document text
- https://learning1.misbidayatulhidayah3medan.sch.id/__statics/gudangsoal/files/roblox-apk-hack_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004d84.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4D84	25488 bytes
SHA-256: `449c5110f74565e41c6b2ee51a3665852449e581049c28085d29f8aa8df1c20f`
`font_01_sfnt_off00008871.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8871	3460 bytes
SHA-256: `27f6ee24b80a0c45a340e32027a43d6c3a7853aac96563eed14d58819399f6a8`
`font_02_sfnt_off000093db.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x93DB	17988 bytes
SHA-256: `4395ae37e1cfbc76b43b42005ca4fd09817d06c76feeafad5bf4b4e665587051`

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